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<div class="header">
  <div class="summary">
<a href="#pub-methods">Public 成员函数</a> &#124;
<a href="class_g_pointer-members.html">所有成员列表</a>  </div>
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<div class="title">GPointer&lt; T &gt; 模板类 参考</div>  </div>
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<p><a class="el" href="class_g_pointer.html" title="GPointer 的行为非常类似一个普通指针，除了当指针所指向的对象被析构后 GPointer 对象被自动设置为 NULL。举例如下： . ">GPointer</a> 的行为非常类似一个普通指针，除了当指针所指向的对象被析构后 <a class="el" href="class_g_pointer.html" title="GPointer 的行为非常类似一个普通指针，除了当指针所指向的对象被析构后 GPointer 对象被自动设置为 NULL。举例如下： . ">GPointer</a> 对象被自动设置为 NULL。举例如下：<br/>
.  
 <a href="class_g_pointer.html#details">更多...</a></p>

<p><code>#include &lt;gPointer.h&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public 成员函数</h2></td></tr>
<tr class="memitem:a0235800fdba0894fd8edae2cd89ed41d"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#a0235800fdba0894fd8edae2cd89ed41d">GPointer</a> ()</td></tr>
<tr class="separator:a0235800fdba0894fd8edae2cd89ed41d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab503c3add2bbc8cd3a6b900052f473ae"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#ab503c3add2bbc8cd3a6b900052f473ae">GPointer</a> (T *o)</td></tr>
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<tr class="memitem:a8001f886f4cfa014913d267a26c19078"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#a8001f886f4cfa014913d267a26c19078">GPointer</a> (const <a class="el" href="class_g_pointer.html">GPointer</a>&lt; T &gt; &amp;p)</td></tr>
<tr class="separator:a8001f886f4cfa014913d267a26c19078"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aade51dbdefe8014200d7631f2c805297"><td class="memItemLeft" align="right" valign="top">virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#aade51dbdefe8014200d7631f2c805297">~GPointer</a> ()</td></tr>
<tr class="separator:aade51dbdefe8014200d7631f2c805297"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a726748aa50b60cb0564343cba2cfb74c"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_g_pointer.html">GPointer</a>&lt; T &gt; &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#a726748aa50b60cb0564343cba2cfb74c">operator=</a> (const <a class="el" href="class_g_pointer.html">GPointer</a>&lt; T &gt; &amp;p)</td></tr>
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<tr class="memitem:ab4bd6779cf704cf09e167d59f6531ced"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_g_pointer.html">GPointer</a>&lt; T &gt; &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#ab4bd6779cf704cf09e167d59f6531ced">operator=</a> (T *o)</td></tr>
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<tr class="memitem:a3fffd49d96f71a57db685ed9d820bfd4"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#a3fffd49d96f71a57db685ed9d820bfd4">operator==</a> (const <a class="el" href="class_g_pointer.html">GPointer</a>&lt; T &gt; &amp;p) const </td></tr>
<tr class="separator:a3fffd49d96f71a57db685ed9d820bfd4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a61f4034dce7c0357d7fe24411a04f30b"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#a61f4034dce7c0357d7fe24411a04f30b">operator!=</a> (const <a class="el" href="class_g_pointer.html">GPointer</a>&lt; T &gt; &amp;p) const </td></tr>
<tr class="separator:a61f4034dce7c0357d7fe24411a04f30b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab011c4702586d58a215b204e48df759c"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#ab011c4702586d58a215b204e48df759c">isNull</a> () const </td></tr>
<tr class="separator:ab011c4702586d58a215b204e48df759c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9c68dd72546074c44fcfd5f0bfd1f602"><td class="memItemLeft" align="right" valign="top">T *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#a9c68dd72546074c44fcfd5f0bfd1f602">operator-&gt;</a> () const </td></tr>
<tr class="separator:a9c68dd72546074c44fcfd5f0bfd1f602"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8ab7f6e979bfdf9c40c31405fc517f8d"><td class="memItemLeft" align="right" valign="top">T &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#a8ab7f6e979bfdf9c40c31405fc517f8d">operator*</a> () const </td></tr>
<tr class="separator:a8ab7f6e979bfdf9c40c31405fc517f8d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa02c62bfa124548611e504f54889b0ce"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_g_pointer.html#aa02c62bfa124548611e504f54889b0ce">operator T *</a> () const </td></tr>
<tr class="separator:aa02c62bfa124548611e504f54889b0ce"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">详细描述</h2>
<div class="textblock"><h3>template&lt;class T&gt;<br/>
class GPointer&lt; T &gt;</h3>

<p><a class="el" href="class_g_pointer.html" title="GPointer 的行为非常类似一个普通指针，除了当指针所指向的对象被析构后 GPointer 对象被自动设置为 NULL。举例如下： . ">GPointer</a> 的行为非常类似一个普通指针，除了当指针所指向的对象被析构后 <a class="el" href="class_g_pointer.html" title="GPointer 的行为非常类似一个普通指针，除了当指针所指向的对象被析构后 GPointer 对象被自动设置为 NULL。举例如下： . ">GPointer</a> 对象被自动设置为 NULL。举例如下：<br/>
. </p>
<div class="fragment"><div class="line"><a class="code" href="class_g_pointer.html">GPointer&lt;GCtrlText&gt;</a> label = <span class="keyword">new</span> <a class="code" href="class_g_ctrl_text.html">GCtrlText</a>();</div>
<div class="line">label-&gt;<a class="code" href="class_g_m_text.html#ae25ca33031cbe64c33095125a7605242">setText</a>(<span class="stringliteral">&quot;xxx, useful&quot;</span>);</div>
<div class="line"></div>
<div class="line"><span class="keyword">delete</span> label; <span class="comment">//这里模拟有人在其它地方把label delete掉了</span></div>
<div class="line"></div>
<div class="line"><span class="comment">//此时，label已经被自动设置为 NULL 了</span></div>
<div class="line"><span class="keywordflow">if</span> ( label )</div>
<div class="line">  label-&gt;<a class="code" href="class_g_m_item.html#a8152ca65287c7335b33d8204c69ae466">show</a>();<span class="comment">//这里将不会被执行</span></div>
<div class="line"><span class="keywordflow">else</span> </div>
<div class="line">  <a class="code" href="g_const_define_8h.html#aa4ce72354bbcb5d381dd93def6e320b6">ZL_DEBUG</a>(<span class="stringliteral">&quot;The label has been destroyed&quot;</span>);<span class="comment">//这条出错信息将会被打印出来</span></div>
</div><!-- fragment --><p> <br/>
</p>
</div><h2 class="groupheader">构造及析构函数说明</h2>
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          <td class="paramtype">const <a class="el" href="class_g_pointer.html">GPointer</a>&lt; T &gt; &amp;&#160;</td>
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<hr/>该类的文档由以下文件生成:<ul>
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